In-depth guides, comparisons and how-tos for power stations, solar and backup power.
How many batteries to power a house depends on two numbers, not one. Energy (kWh) decides how long you last. Power (kW) decides what you can run at the same time, including the startup surge of an AC or well pump. Most homes run out of power capacity before they run out of energy. Electrical […]
Solar lease vs buy got more complicated in 2026. The 30% federal credit for homeowner-owned systems (Section 25D) ended for systems placed in service after Dec 31, 2025. Third-party-owned systems (leases and PPAs) may still qualify for a business credit (48E) for the owner, under rules that are still changing. That shifts the math between […]
12V vs 24V vs 48V is mostly a question of current. The same power at double the voltage takes half the amps, so you get thinner cable, smaller fuses and less voltage drop. The trade-off is that most vehicle accessories run on 12V. Here’s how to choose. Electrical work can be dangerous: follow the manual, […]
The Tesla Powerwall 3 is Tesla’s third-generation home battery, and the first with a built-in solar inverter. This review uses Tesla’s US datasheet and installation manual for every spec, explains how the Expansion unit works, and covers which homes it suits. We haven’t tested one ourselves, so there are no hands-on runtime claims here. Tesla […]
Pure sine wave vs modified sine wave is the first choice you make when buying an inverter. Both turn battery DC into AC, but the shape of that AC decides whether your fridge hums, your laptop charger gets hot, or your CPAP refuses to run. Here’s what actually differs and how to choose. Electrical work […]
Generator vs battery backup for home comes down to how long your outages last. A generator runs as long as there’s fuel. A battery is silent, instant and fume-free, but it runs out unless solar refills it. Many homes end up using both. Electrical work can be dangerous: follow the manual, fuse and size every […]
Fuses vs circuit breakers comes down to this: both protect wiring from overheating, but a fuse sacrifices itself and a breaker trips and can be reset. Choosing the right one for a battery, a solar array or a home circuit depends on interrupt rating, DC capability and how you plan to use it. Electrical work […]
Surge watts vs running watts explains why a 1,000W inverter can run a 150W fridge all day yet trip the moment the compressor starts. Motors and compressors pull a short spike of current at startup, often several times their running draw. Your inverter, power station or home battery has to handle both numbers. Surge Watts […]
What size fuse do I need? Start with one rule: a fuse protects the wire, not the device. It has to blow before the cable overheats, but it shouldn’t blow during normal operation. Here’s how to size fuses for battery cables, inverters, DC loads and solar strings. Electrical work can be dangerous: follow the manual, […]
What size inverter do I need? Bigger isn’t automatically better. An oversized inverter wastes battery through higher idle draw and needs thicker cable. An undersized one trips when the fridge compressor kicks on. Here’s a five-step method and three worked examples. Electrical work can be dangerous: follow the manual, fuse and size every cable correctly, […]
